Metal-working power-press.



I. K. GASWELL.

METAL WORKING POWER PRESS. APPLICATION FILED 11.20.17, 1906.

937,226,. Patented Oct. 19, 1909.

6 SHEETS-SHEET 1.

I. K. GASWELL.

METAL WORKING POWER PRESS.

.APPLIOATION FILED DEO.17, i906.

Patented Oct. 19,1909.

6 SHEETS-SHEET 2.

F. K. GAQWELL.

METAL WORKING POWER PRE$$.

APPLICATION FILED D130. 17, 1906.

Patented Oct. 19, 1909.

6 SHEETS-SHEET 3.

a nun co.. PMcrwJmouRAPnERs WAS F. K. cAsWELL. METAL WORKING. POWER PRESS.

APPLIOATION FILED DEO.17, 1906.

Patented Oct. 19;, 1909.

6 SHEETS-SHEET 4.

ANDREW. B. GRAHAM c0" Pnow-urubnnmam WASNINGTOrL D Q '1'". K; GASWELL METAL WORKING POWER PRESS.

APPLIGA'L'IOH FILED D3017, 1.906. I

Patented Oct. 19,1909. I I

- 6 SHEETS-SHEET 6.

P. K. GASWELL.

METAL WORKING POWER PRESS. APPLIOATION'IILED Dam-17,1906.

937,226; Patented 0ct.19,1909.

6 SHEETS-SHEET 6.

1" Y; M 46 wuamw 40 55 llliliuql barren srarns rn'rnnr orrrcn.

FREDERICK K. CASWELL, 0F LOS ANGELES, CALIFORNIA, ASSIGNOR 'IO PAUL DICKIN- SON (INCORPORATED), OF CHICAGO, ILLINOIS, A CORPORATION OF WYOMING.

METAL-WORKING POWER-PRESS.

Specification of Letters Patent.

Patented Oct. 19, 1909.

Application filed. December 17, 1906. Serial No. 348,176.

To all whom it may concern:

Be it known that I, FREDERICK K. (haswELL, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in lVIetal-VVorking Power-Presses, of which the following is a full, clear, and exact specification.

The invention relates to improvements in power presses particularly adapted for working sheet metals although the improvements are equally well adapted for use on any form of metal working machines in which it is desired to perform a plurality of operations while the material to be operated upon is held in a single position in the machine.

The primary object of the invention is to provide improved mechanism for use on presses of a double-acting type that is simple and strong in construction and efficient in its operation. i

In the present embodiment of the invention the mechanism shown is designed for use with other tool carrying presses for the purpose of performing a series of operations on sheet metal in the production of a shell or casing for brake shoes, the entire mechanism for the same being fully described in m co-pending application Serial No. 348,172, filed December 17, 1906, on automatic brake shoe machines.

A further object of the invention is to provide improved construction in a double-acting press that readily admits of its being associated with other more or less similar metal working machines, and to accomplish this purpose an improved. arrangement of the various working parts in the driving mechanism is provided. c

To the attainment of these ends and the accomplishment of other new and useful objects, as will appear, the invention consists in the featuresof novelty in the construction, combination and arrangement of the.

various parts, hereinafter more fully described and claimed, and shown in the accompanying drawings illustrating an exemplification of this invention, and in which:-

Figure 1 is a side elevation of the press. Fig. 2 is a side elevation view similar to Fig. 1 with the main frame and the movable head or ram broken away to show the interior mechanism. Fig. 3 is a vertical sectional view on broken line 33, Fig. 2. F 1g. a is a horizontal sectional view on line l-4,

Fig. 2. Fig. 5 is a view taken on line 55,

Fig. 2. Fig. 6 is a view on line 6-6, Fig. 2. Fig. 7 is a view in elevation of the upright stationary die-holding member that cooperates with the movable head or ram. Fig. 8 is an enlarged perspective view of one of the female dies carried on the head or ram. Fig. 9 is a perspective view of a member mounted on the movable head or ram and into which the die shown in Fig. 8 is secured. Fig. 10 is an enlarged perspective View of the movable head or ram. Fig. 11 is an enlarged perspective view of the reciprocable driving members which are mounted contiguous to the main driving shaft cams. Fig. 12 is a view of one of the adjustable roller carrying brackets showing the reciprocable driving member (see Fig. 11) in cross section.

The main frame is indicated by the numeral 1 and is preferably formed of an integral casting although it may be formed in parts and firmly secured together. It will be observed that the main frame is provided with suitable bottom member or plate to which are connected two vertical supporting side plates. Also that the main frame is provided with supporting means across the top for anchoring the side plates and to serve as supporting means for the movable head or ram and its cooperating member which carries the stationary dies. Main driving shaft 2 is journaled in the main frame, preferably near the bottom of it, in order that the main frame may furnish a substantial support for it. A suitable gear wheel 3 is shown in the drawing for imparting power to the main driving shaft and any usual means for driving the press may be employed.

4 and 5 are cams eccentrically mounted on main shaft 2 and are adapted to impart reciprocating movement to members 6 and 7. Members 6 and 7 are of the same general construction and are illustrated by the dethis manner of mounting reciprocating members 6 and 7 enables them to have a slight rocking movement on their longitudinal axis, which is an advantage in construction, as it prevents bindingof the parts and enables them to be assembled with a minimum amount of machine work. As the members 6 and 7 are similar in construction, reference to the detail parts of member 6 only will be made. It will be noted that upright supports 6 are provided to support antifriction roller 10 which is in contact with the eccentric surface of driving cam 1. Another antifriction roller 11 is mounted on reciprocating member 6 to bear against cam 4; and it willbe observed that the support 12 for this roller is adjustable in relation to member 6 by means of the suitable clamping member 13 and retaining bolts let. Stay rod or bolt 15 is adjustably secured to movable bracket 12 and is secured to stationary bracket 6 which is preferably cast integral with member 6 (see Fig. 11). Bracket (5 supports at its upper end link 16 which is operatively connected to pivoted lever 17.

17 is mounted to rock on the main frame and supported by shaft 18 preferably secured to both sides of the main frame. As before stated, the member 7 may be a duplicate of the member 6 and provided with antifriction rollers 19 and 20 in contact with driving cam 5. Movement of member 7 is imparted to rocking lever 21 by means of connecting link 22. Lever 21 is mounted to rock on the main frame by means of shaft 23 similar to shaft 18 supporting lever 17.

By referring to the illustrations, particularly Fig. 3, it will be seen that these rocking levers are cast with double members extending both upwardly and downwardly from the central pivotal member, a construction which insures strength and economy of materials and at the same time makes it convenient to provide a wide bearing surface, as well as a convenient means for attaching connecting links. The driving head or ram 24 (see Fig. 10) is preferably cast in one piece although it may be constructed in parts and assembled in any convenient manner. It is provided with suitable slides 2% adapted to work in cooperating grooves 25 in menr bers 25 which are secured at the top of main frame 1.

Rocking lever 17 is provided near its upper end with link 26 which is preferably threaded (see Fig. 2) in order that it may be adjustabl'y secured into a suitable bearing 27 carried near the lower edge of head or ram 2 1. Head 24 is provided with suitable bearings 24: and 24 (see Figs. 2 and 10) and in these bearings an auxiliary reciprocating head is mounted consisting of the sliding cylindrical heads or rods 28 and 29 which are adjustably secured. at their opposite ends into the cross head 80. An adjustable link consisting of threaded members 30 and 81 and connecting turn buckle 32 connects cross head 30 with the upper end of rocking lever 21. lVIembers 28 and it will be observed extend through the head or ram 24 and expose their forward ends beyond its tool or die carrying face. In the present embodiment these forward ends support the rectangular forming or bending die The upright standard or stationary member 34 is adapted to carry suitable tools coiiperat-ing with tools mounted on movable members 24 and 33. One or more strengtlr ening braces 35 (see Fig. 1) may be employed to support this member.

As before stated, in the present embodiment of the invention, the dies carried by the press are adapted to be used in the making of shells or casings from sheet. metal to be used in the manufacture of brake shoes, although by varying the form of upright memer and changing the tools the press may be adapted to perform any of the operations commonly performed by this class of machines.

36 and 37 are cutting dies carried on the main head 24- and cooperate with members 88 and 39 on fixed member 34-.

In this embodiment of the invention the mechanism is so adjusted that the movement of main driving cams 4 and 5 through rocking levers 17 and 21 impart different degrees of movements to the head or ram 24; and to the auxiliary head operating member 33. The effect of the movements imparted through members 17 and 21 is to cause the entire head to move synchronously toward the fixed member 3 1. Tools 88 and 39 are set to act somewhat in advance of tools car ried on the auxiliary head and, when the desired operation has been performed by these tools the driving cams through their associated mechanisms cause the main head or ram 241- to recede from the fixed member 31. and at the same time continue to rock the lever 21 in the direction necessary to continue the forward movement of the auxiliary head mechanism which controls member 83.

It will be observed that the action of tools 36, 37, 38 and $39 will effect a shearing or cutting action at two separated places in a sheet of metal inserted in the machine. It may be remarked that in the present embodiment these tools are designed to trim off the opposite ends of rectangular metal sheets adapted to be formed into a brake shoe holder or casing. It may also be remarked that bending dies 11, 42, 48 and 44: are designed to cooperate with rectangular member for the purpose of bending side and end members of a brake shoe casing at an angle to the main or back member of the casing. After the withdrawal of the head or ram 24 the for ward action of the auxiliary head or ram forces the metal blank entirely through the rectangular opening in member 34 and as the blank is wider than the distance between bending dies 41 and 42 and longer than the distance between dies 43 and 44 it will be seen that the desired effect of forming the sides and ends atan angle to the main or back member will be accomplished. The cutting dies 36 and 37 on head 24 may be adjustably secured in suitable supporting plates 40 (see Fig. 9) which are secured in any convenient manner to head 24. Clamps 45 supporting screw threaded bolts 46 illustrate a convenient manner of securing the removable bending dies 41, 42, 43 and 44 in the supporting member 84.

For a further description of the brake shoe which this particular embodiment of the invention is designed to make, attention is called to my co-pending application on automatic brake shoe machines, which has already been referred to in this specification.

In order that the invention might be fully understood, the details of an embodiment thereof have been thus specifically described, but 1 Nhat I claim is:-

1. In a device of the character described, the combination with a main frame and a stationary abutting member mounted thereon, of a head or ram mounted in ways on the upper side of said frame and adapted to reciprocate horizontally and to cooperate with said stationary abut-ting member, a main driving shaft journaled in said main frame, below the plane of reciprocation of said head or ram, and means adapted to impart movement from said shaft to the head or ram, said means comprising ahorizontally' reciprocating member, a cam on said shaft, a bearing on said horizontally reciprocating member, a lever pivoted on said main frame, a link pivotally connected to said lever and to said bracket, and a link having pivotal connection with said lever and the head or ram.

2. In a mechanism of the class described, the combination t with a main frame and a stationary abutting member, ways adja cent the upper side of said frame, a head or ram mounted for horizontal reciprocation in said ways and adapted to cooperate with the said stationary abutting member, an auxiliary head movably mounted in relation to said head or ram and carried thereby, a main driving shaft journaled to the main frame below the plane of reciprocation of the head or ram, and means adapted to impart movement from said main driving shaft to said head or ram and to said auxiliary head, said means embodying a pairof cams mounted on said shaft, a pair of horizontally reciprocating members journaled in the main frame contiguous to said cams and adapt-ed to be operated thereby, a pair of levers pivotally mounted on the main frame, there being oneend of each adjacent said horizon- &

tally reciprocating members and their other ends adyacent the head or ram, links having pivotal connections with said horizontally reciprocating members and said levers, and links connecting the other ends of said levers with the head or ram and with the auxiliary head.

3. In a power press, the combination with a main frame, of a main head or ram carried thereby and adapted to reciprocate in an approximately horizontal plane, a main driving shaft journaled in the main frame below the plane of movement of said main head or ram, an auxiliary head carried by said main head or ram and movably mounted thereon, and means adapted to impart difierent relative movements to the main head or ram and to the auxiliary head, said means embodying a pair of eccentrically mounted cams carried by said main driving shaft, reciprocating members contiguous to said cams and con trolled thereby, pivoted levers mounted on the main frame, links having pivotal connection with said reciprocating members and the pivoted levers, and adjustable links connecting the opposite ends of said pivoted levers with said main head or ram and with said auxiliary head.

4. In a power press the combination with a main frame, of a main driving shaft ournaled therein, of a main head or ram mounted for horizontal reciprocation on said frame in a plane above said main driving shaft, an auxiliary head movably mounted in said main head and means adapted to impart movement from said main driving shaft to said head or ram and to said auxiliary head, said last mentioned means embodying a pair of cams mounted on said shaft, reciprocating members journaled in said main frame contiguous to said cams and operated thereby and means adapted to impart movement of said reciprocating members to said main head or ram and to said auxiliary head.

5. In a power press the combination with a main frame, of a main head or ram carried thereby and adapted to reciprocate in an approximately horizontal plane, a main driv ing shaft journaled in said main frame below the plane of movement of said main head or ram, an auxiliary head carried by said main head or ram and movably mounted in relation thereto, and means adapted to impart different relative movements to the main head or ram and to the auxiliary head.

6. In a power press the combination with a main frame, of a main head or ram carried thereby and adapted to reciprocate in an approximately horizontal plane, a main driving shaft journaled in said main frame below the plane of movement of said main head or ram, an auxiliary head carried by said main head or ram and movably mounted in relation thereto and means adapted to impart different relative movements to the main head or rain and to the auxiliary head, said means embodying a pair of eccentrically mounted cams carried by said main driving shaft, reciprocating members contiguous to 5 said cams and adapted to receive variable degrees of movement from said cams, pivoted levers mounted on said main frame, means connecting said pivoted levers with said reciprocating members and means con- 10 necting the opposite ends of said pivoted l levers With said main head or rain and with said auxiliary head.

In testimony whereof I have signed my name to this specification, in the presence of twosubscribing Witnesses, on this 11th day 15 of December A. D. 1906.

FREDERICK K. CASVELL. Witnesses M. lV. CANTWELL, A. L. SPRINKLE. 

